澜沧荛花Wikstroemia delavayi Lecomte
澜沧荛花Wikstroemia delavayi Lecomte
33.澜沧荛花 图版51: 3-4
Wikstroemia delavayi Lecomte in Not. Syst. 3: 129. 1915; Hand.-Mazz. Symb. Sin. 7: 586. 1933. ——W. mekongensis W. W. Smith in Not. Bot. Gard. Edinb. 12: 229. 1920, ex auct. descr., syn. nov.
灌木，高1-2米，直立；多分枝，小枝幼时近圆形，黄绿色，无毛。叶对生，茎下部的叶较大，近花序部分的叶较小，无毛，披针状倒卵形、倒卵形或倒披针形，长3-5.5厘米，宽1.6-2.5厘米，先端圆具短而微钝的小尖头或短渐尖及锐尖，基部圆形或微心形，侧脉约5对，细而无光，极倾斜，上面绿色，下面苍白色。圆锥花序顶生，长3-4 厘米，有时延伸到10厘米；花序梗无毛，花梗长约1毫米，具关节；花黄绿色，常在顶端呈紫色，约长8-10毫米，宽1毫米，被散生的小疏柔毛，裂片4，长圆形，约长2毫米；雄蕊8，2列，花药线状长圆形，长约1毫米，花丝短；子房倒卵形，有柄，顶端具疏柔毛，长约2.5毫米，花柱短，柱头头状；花盘鳞片1-2枚或1枚，在顶端2裂。干果圆柱形，长约4毫米，径约1.2毫米。秋季开花，随即结果。
产云南及四川。生于海拔2000-2700米的河边、林中、山坡灌丛或河谷石灰岩山地。模式标本采自洱源。
《Flora of China》 Vol. 13 (2007)
Wikstroemia delavayi Lecomte
澜沧荛花 lan cang rao hua
Daphne delavayi (Lecomte) Halda; D. scytophylla (Diels) Halda subsp. mekongensis (W. W. Smith) Halda; Wikstroemia mekongensis W. W. Smith.
Shrubs erect, 1-2 m tall, much branched. Young branches pale green, turning purplish or brownish, subterete, glabrous. Leaves opposite, larger toward stem apex; petiole ca. 2 mm; leaf blade pale green adaxially, paler abaxially, lanceolate-obovate, obovate, or oblanceolate, 3-5.5 × 1.6-2.5 cm, both surfaces glabrous, base broadly cuneate, rounded, or slightly cordate, apex rounded, shortly apiculate, or acuminate; lateral veins 4 or 5 pairs, dark, slender, very oblique. Inflorescences terminal, paniculate, 3-4(-12) cm, to 9 cm wide, axes elongating considerably in fruit; peduncle stout, soon glabrous. Pedicel short, ca. 1 mm, articulate. Calyx carmine-purple to yellowish green with purple at apex; tube tubular, 8-10 × ca. 1 mm, exterior scattered puberulous; lobes 4, oblong, (1-)2 mm, apex obtuse. Stamens 8, lower whorl inserted at middle of calyx tube, upper whorl at throat; filaments short; anthers oblong, ca. 1 mm. Disk annular, extended on one side into 1(-3) scale(s), scales obovate, apex 2-lobed. Ovary cylindric-obovoid, 2.5-3 mm, stipitate, apex pubescent; style obscure; stigma capitate. Drupe dry or semidry, cylindric, ca. 4 × 1.2 mm, enclosed by persistent calyx. Fl. and fr. autumn.
● Valley forests, shrubby or limestone areas; 2000-2700 m. Sichuan, Yunnan.
The calyx color can be strongly influenced by the environment: the type gathering of Wikstroemia mekongensis was described in the field as having deep purple-crimson flowers, whereas plants propagated in Europe from the same gathering had greenish yellow flowers, tipped with purple in bud.
科名：瑞香科 Thymelaeaceae
属名：荛花属 Wikstroemia
33.澜沧荛花 图版51: 3-4
Wikstroemia delavayi Lecomte in Not. Syst. 3: 129. 1915; Hand.-Mazz. Symb. Sin. 7: 586. 1933. ——W. mekongensis W. W. Smith in Not. Bot. Gard. Edinb. 12: 229. 1920, ex auct. descr., syn. nov.
灌木，高1-2米，直立；多分枝，小枝幼时近圆形，黄绿色，无毛。叶对生，茎下部的叶较大，近花序部分的叶较小，无毛，披针状倒卵形、倒卵形或倒披针形，长3-5.5厘米，宽1.6-2.5厘米，先端圆具短而微钝的小尖头或短渐尖及锐尖，基部圆形或微心形，侧脉约5对，细而无光，极倾斜，上面绿色，下面苍白色。圆锥花序顶生，长3-4 厘米，有时延伸到10厘米；花序梗无毛，花梗长约1毫米，具关节；花黄绿色，常在顶端呈紫色，约长8-10毫米，宽1毫米，被散生的小疏柔毛，裂片4，长圆形，约长2毫米；雄蕊8，2列，花药线状长圆形，长约1毫米，花丝短；子房倒卵形，有柄，顶端具疏柔毛，长约2.5毫米，花柱短，柱头头状；花盘鳞片1-2枚或1枚，在顶端2裂。干果圆柱形，长约4毫米，径约1.2毫米。秋季开花，随即结果。
产云南及四川。生于海拔2000-2700米的河边、林中、山坡灌丛或河谷石灰岩山地。模式标本采自洱源。
《Flora of China》 Vol. 13 (2007)
Wikstroemia delavayi Lecomte
澜沧荛花 lan cang rao hua
Daphne delavayi (Lecomte) Halda; D. scytophylla (Diels) Halda subsp. mekongensis (W. W. Smith) Halda; Wikstroemia mekongensis W. W. Smith.
Shrubs erect, 1-2 m tall, much branched. Young branches pale green, turning purplish or brownish, subterete, glabrous. Leaves opposite, larger toward stem apex; petiole ca. 2 mm; leaf blade pale green adaxially, paler abaxially, lanceolate-obovate, obovate, or oblanceolate, 3-5.5 × 1.6-2.5 cm, both surfaces glabrous, base broadly cuneate, rounded, or slightly cordate, apex rounded, shortly apiculate, or acuminate; lateral veins 4 or 5 pairs, dark, slender, very oblique. Inflorescences terminal, paniculate, 3-4(-12) cm, to 9 cm wide, axes elongating considerably in fruit; peduncle stout, soon glabrous. Pedicel short, ca. 1 mm, articulate. Calyx carmine-purple to yellowish green with purple at apex; tube tubular, 8-10 × ca. 1 mm, exterior scattered puberulous; lobes 4, oblong, (1-)2 mm, apex obtuse. Stamens 8, lower whorl inserted at middle of calyx tube, upper whorl at throat; filaments short; anthers oblong, ca. 1 mm. Disk annular, extended on one side into 1(-3) scale(s), scales obovate, apex 2-lobed. Ovary cylindric-obovoid, 2.5-3 mm, stipitate, apex pubescent; style obscure; stigma capitate. Drupe dry or semidry, cylindric, ca. 4 × 1.2 mm, enclosed by persistent calyx. Fl. and fr. autumn.
● Valley forests, shrubby or limestone areas; 2000-2700 m. Sichuan, Yunnan.
The calyx color can be strongly influenced by the environment: the type gathering of Wikstroemia mekongensis was described in the field as having deep purple-crimson flowers, whereas plants propagated in Europe from the same gathering had greenish yellow flowers, tipped with purple in bud.
